this is what we now use to read $RANDFILE / $HOME/.rnd.
(Previously, after 'cat'ting lots of stuff into .rnd
only the first MB would be looked at.)
Bugfix for apps/enc.c: Continue if RAND_pseudo_bytes returns 0
(only -1 is an error).
plain not working :-(
Also fix some memory leaks in the new X509_NAME code.
Fix so new app_rand code doesn't crash 'x509' and move #include so it compiles
under Win32.